Pitting-knife



I s.1. DUNK-LEY.

PITTING KNIFE.

APPLICATION FILED lAN.28, 1919.

1 ,370 Q98. I Patented Mar. 1, 1921.

awash x1201 SAMUEL J. QU/VKLE) q/Vi/tmcoow claims.

SAMUEL J. DUNKLEY, 0F KALAMAZOO, MICHIGAN, A SSIGNOR TO DUNKLEY ooMra'nY,

OF KALAIVIAZ OO, MICHIGAN, A CORPORATION OF MICHIGAN.

" FITTING-KNIFE.

Latches. '7

To all QUllO llt it may concern v p Be it known that I, SAMUEL J. DUNKLEY,

citizen of the United States, residing'at Kalamazoo, in the'county of Kalamazoo and State of Michigan, have invented certain newoand useful Improvements in Pittinglinives, of which the following is a head, the halves being symmetrical and exspecification.

This invention relates to improvements iii-pitting knives. It relates particularly to a development of my improved pitting knife described in my patent application filed January 11, 1917, Serial No. 141,888.

-This improvement j is particularly in the head of the knife and in the means for oscillating the blade, the 'ob ect being to provide -a structure withlarger clearance and greater strength 'and'of great economy in production and easyrenewa'l of the cutter blades or other parts... I

Detailed objects and further objects as to economies of construction, and operation will appear from the description to follow. I accomplish the objects of my invention by the devices and means described in the following specification. clearly defined and pointed out in the A structure which is a preferred embodiment of my inv'entionis clearly shown in the accompanying drawing, forming a part of this specification, in which-- Figure I is a side elevation view of full size of a pitter knife embodying the fea-.

tures of my invention.

Fig. II "is a longitudinal sectional view showing details of construction, taken in the broken plane indicated by the section line 2-2 of Figs. III, IV, V and VI, the lower portion of the frontihalf of the head being broken away to show details of construction and the driving shaft being shown in full lines.

Fig. III is a. transverse detail enlarged sectional view taken on a line corresponding to line 33 of Fig. II.

Fig. IV is a transverse detail sectional view on line 4:4 of Fig. II.

Fig. V is a sectional view, somewhat enlarged, taken on line 55 of Figs. I and II.

Fig. VI is a detail edge elevation of the upper portion of the handle and head. v

Fig. VII is an enlarged detail view of the serrated cutter.

In the drawing the sectional views are Specification'of Letters Patent.

The invention is Patented 1,1921

Application filed January 28,1919. seriaino. 273,599.

taken looking in; the direction of thelittle IVY,

arrows at the ends'of the section lines and similar numerals of reference refer to simi-i lar parts throughout the several views.

Considering the numbered partsflof the drawing, 1 is a handle, preferably ofaluminum.: 2,2 is the longitudinally divided to give strength to the aluminumand-pro vide a beari'ng for the shaft. The halves of the divided head are-retained together by the screw 5 above.

Disposed in Jan arcedguidingrecess within thehalveis of this headis a; curved oscil lating segment- 6to which is secured a cutter 7 in the-form of an arc of a circle, the ends being secured to the oscillating member 6 by screw 8, as clearly appears in Fig. II: The segment is disposed in the curved guideway 9. .Within the" transverse journal bearing "opening 10, which is drilled through the lower end of-the oscillating segment member 6 and opened out'at the bottom thereof, is disposed a short cylinder or pin 3. This is slotted longitudinally and is capable of oscillation within the opening. The slot is disposed on the under side and is engaged by a wrist pin 11 which is carried on the end of the revoluble shaft 12. Shaft 12 is disposed Within the bearings of the bushing Flexible shaft connections 14 and 15 are provided for the lower end of the handle 1, the outerrshell 14 being secured to the handle and the tip 15 of the driving shaft being suitably engaged within the shaft 12 within'the handle. These parts are driven by any suitable motor means or by a. crank if desired. It is preferable thatthe shaft have a speed of revolution'of about 1800 per minute. p

In use the operator takes this tool in hand, and with the blade oscillating very rapidly, the same being suitably serrated on the edge, the pit of the peach or any other fruit is rapidly cut out. This is of special advantage in the pitting of cling-stone peaches, as the pit otherwise does 7 not separate readily.

The blade 7 may be serrated on its edge as indicated by cross lines in Fig. 1 or may be left plain, and it may be beveled either on the outside or the inside to facilitate its work, depending on the particular work in hand. 7

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is: r

.1. In a peach pitting knife, the combination of a handle, a longitudinally divided head, the divided lower end of which forms a screw threaded shank and the upper end of which is retained together by a screw, an arc-shaped guiding recess in the said head, an arc-shaped oscillating knife carrying segment within the said guide, a curved knife in theform of an arcof a circle, detachably secured to the said oscillating seg ment, a transverse journal bearing opening inthe said oscillating member, a longitudinally slotted oscillating pin arranged in the said bearing member, a driving shaft axially disposed in said handle, and a wrist pin on the end of the said shaft disposed to [engage the saideslot and oscillate said knife, as specified, I

2. In a peach pitting knife, the combination of a hollow handle with an axially disposed revoluble shaft therein, a longitudinally divided head, the divided lower end of whichforms a screw threaded shank and the upper end of which is retained together by asorew, an arc-shaped guiding recess in the said head, an arc-shaped oscillating knife carrying segment within the said guide, a curved knife in the form of an arc of a circle, detachably secured to the said oscillating segment, and operative connections; from said shaft to said oscillating member, coacting as specified.

3. In a peach pitting knife, the combinaslotted oscillating pin arranged in the said bearing member, a driving shaft axially dis posed in said handle, and a wrist pin on the end of the said shaft disposed to engage the said slot and oscillate said knife, as specified.

4;. In a peach pitting knife, the combination of ahollow handle with an axially disposed'revoluble shaft therein, an arc-shaped guiding recess in the said head, an areshaped oscillating knife carrying segment within the said guide, a curved knife in the form of an arc of a circle, detachably'secured "to the said oscillating segment, and

operative connections from said shaft to said oscillating member, coacting as specified.

In a peach pitting knife, the combination of a suitable handle, with a head therefor, a curved guideway in the said head, a corresponding oscillating member supported in said guide, a curved knife carried by said oscillating member, and actuating means supported'by said handle for oscillat ing the said member and knife, as specified. In witness whereof, I have hereunto set my hand, and seal in the presence of two witnesses.

SAMUEL J. DUNKLEY. [L.S.] lVitnesses: 3 LUELLA G. GREENFIELD, MARTHA J. GREGORY. 

